Polishing-wheel.



' miiwssee:

D. F. MOGOVERN.

POLISHING WHEEL.

APPLICATION FILED OOT.8, 1906.

mwmwnml| Lw a: pant-Q2 e dfiri Ck M Gox/e 61 PAT'ENTED JULY 30, 1907.

UNITED STATES PATENT OFFICE DANIEL FREDERICK MCGOVERN,

-OF MONTPE-LIER, VERMONT.

POLISHING-WHEEL.

Specification of Letters Patent.

Patented J'ul 30, 1907.

Application filed October 8,1906. Serial No. 337.890.

To all whom it may concern:

.Be it known that I, DANIEL FREDERICK MCGOVERN, a citizen of the'United States, residing at Montpelier,

in the county of Washington and State of Vermont,

an arrangement of scroll flanges which will work the material across'the face of the polishing wheel and allow the flanges to work through it and. keep it separated to prevent its caking. To this end I have devised a combination of flange spirals and curves so arranged as to. work the material across the path of succeeding spirals and allow the same to obtain from it a maximum amount of polishing action.

The'construction of the device will be more fully described, in the specification which follows and are illustrated in the drawings which form a part thereof and in which,

Figure 1, is a bottom view of the polishing wheel, and Fig. 2, a side view of the same.

In these drawings A indicates the frame disk of the wheel, having the socket S to receive the driving shaft.

B are detachable spiral flanges having sharpens runner shaped ends b.

C are inwardly turned sections on two or more of the flanges B. These sections 0 curve in radially towards the center of the wheel, so as to bring the material drawn in by the spiral, across the face of the wheel and in line with the flanges which terminate just behind it.

D are a pair of oppositely faced flanges sharpened at their ends d. These flanges terminate just in front of p the end of the portion C and tend to prevent the undue accumulation of material at the center of the disk and keep the materials working back on O.

H is an opening through the disk A.

In operation the disk is rotated in the direction of the arrow over the block to be polished. As the wheel is rotated the flanges pick up and work under their sur faces the polishing material and at the same time keep this material moving and shifting so that it will not cake. The flanges at the outer edge of the wheel keep the material divided and work it along a pluralityof channels, the flange section'O drags it across the path of the inner flanges and the inner flanges D cooperate with the flange section C and keep the material from concentrating at the center of the wheel.

What I therefore claim and ters Patent, is:-- g

1. In a polishing wheel, the combination of a plate, a spirally disposed flange havinga radially disposed section desire tosecure by Letat its inner end, and a flange within said first named flange and termlnatlng'in front of said radially disposed portion. H

2. A stone polishing wheel consisting of a plate, a plurality of flanges spirally arranged thereon at dilTorent dlstances from the center thereof, one of the outer flanges having its inner end disposed radially across the path of one of the inner flanges.

In witness whereof, I aflix my signature in presence of two witnesos.

DANIEL FREDERICK MCGOVERN.

Witnesses:

Moms McKmsrnr, Harmr C. SHURTLEFF. 

